Biology
Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Chapter 47, Problem 4TY

A major advantage of a double circulation is that

  1. a. blood can be pumped to the upper portions of the body by one circuit and to the lower portions of the body by the other circuit.
  2. b. each circuit can pump blood with differing pressures to optimize the function of each.
  3. c. the oxygenated blood can mix with the deoxygenated blood before being pumped to the tissues of the body.
  4. d. less energy is required to provide nutrients and oxygen to the tissues of the body.
  5. e. All of the above are advantages of a double circulation.
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A major advantage of a double circulation is thata. blood can be pumped to the upper portions of the body by onecircuit and to the lower portions of the body by the other circuit.b. each circuit can pump blood at a different pressure to optimize thefunction of each.c. the oxygenated blood can mix with the deoxygenated blood beforebeing pumped to the tissues of the body.d. less energy is required to provide nutrients and oxygen to the tissuesof the body.e. All of the above are advantages of a double circulation.
Which of the following is the best description of what happens in capillaries? A. Capillaries are surrounded by thicker smooth muscle moving blood cells to exchange nutrients and oxygen. B. Capillaries connect minor veins to major veins returning blood to the heart. C. Capillaries are the location where oxygen, carbon dioxide, and nutrients are exchanged with tissues at the cellular level. D. Capillaries are the site where blood mixes with interstitial fluid to allow for gas and nutrient exchange.
Which of the following best describes the primary role of resistance vessels? Group of answer choices a.Providing nutrient supply to the walls of larger vessels b. They regulate arterial blood pressure and blood flow within the organs. c. Ensuring blood storage during periods of low cardiac output d. Directing blood flow to specific organs based on demand
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The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license